diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/snapshotter/MapSnaphotUtil.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/snapshotter/MapSnaphotUtil.java new file mode 100644 index 00000000000..da86dc51fbc --- /dev/null +++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/snapshotter/MapSnaphotUtil.java @@ -0,0 +1,29 @@ +package com.mapbox.mapboxsdk.snapshotter; + +import android.graphics.BitmapFactory; + +class MapSnaphotUtil { + + static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) { + // Raw height and width of image + final int height = options.outHeight; + final int width = options.outWidth; + int inSampleSize = 1; + + if (height > reqHeight || width > reqWidth) { + + final int halfHeight = height / 2; + final int halfWidth = width / 2; + + // Calculate the largest inSampleSize value that is a power of 2 and keeps both + // height and width larger than the requested height and width. + while ((halfHeight / inSampleSize) >= reqHeight + && (halfWidth / inSampleSize) >= reqWidth) { + inSampleSize *= 2; + } + } + return inSampleSize; + } + + +} diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/snapshotter/MapSnapshotter.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/snapshotter/MapSnapshotter.java index 37d05fc3280..4fbbc2409cd 100644 --- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/snapshotter/MapSnapshotter.java +++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/snapshotter/MapSnapshotter.java @@ -7,6 +7,7 @@ import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.support.annotation.UiThread; +import android.util.DisplayMetrics; import com.mapbox.mapboxsdk.R; import com.mapbox.mapboxsdk.camera.CameraPosition; @@ -55,7 +56,7 @@ public interface ErrorHandler { void onError(String error); } - private static final int LOGO_MARGIN_PX = 4; + private static final int LOGO_MARGIN_DP = 4; // Holds the pointer to JNI NativeMapView private long nativePtr = 0; @@ -252,10 +253,34 @@ public void cancel() { } protected void addOverlay(Bitmap original) { - float margin = context.getResources().getDisplayMetrics().density * LOGO_MARGIN_PX; + DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics(); + float margin = displayMetrics.density * LOGO_MARGIN_DP; Canvas canvas = new Canvas(original); - Bitmap logo = BitmapFactory.decodeResource(context.getResources(), R.drawable.mapbox_logo_icon, null); - canvas.drawBitmap(logo, margin, original.getHeight() - (logo.getHeight() + margin), null); + + // Decode just the boundaries + BitmapFactory.Options bitmapOptions = new BitmapFactory.Options(); + bitmapOptions.inJustDecodeBounds = true; + BitmapFactory.decodeResource(context.getResources(), R.drawable.mapbox_logo_icon, bitmapOptions); + int srcWidth = bitmapOptions.outWidth; + int srcHeight = bitmapOptions.outHeight; + + // Ratio, preferred dimensions and resulting sample size + float widthRatio = displayMetrics.widthPixels / original.getWidth(); + float heightRatio = displayMetrics.heightPixels / original.getHeight(); + float prefWidth = srcWidth / widthRatio; + float prefHeight = srcHeight / heightRatio; + int sampleSize = MapSnaphotUtil.calculateInSampleSize(bitmapOptions, (int) prefWidth, (int) prefHeight); + + // Scale bitmap + bitmapOptions.inJustDecodeBounds = false; + bitmapOptions.inScaled = true; + bitmapOptions.inSampleSize = sampleSize; + bitmapOptions.inDensity = srcWidth; + bitmapOptions.inTargetDensity = (int) prefWidth * bitmapOptions.inSampleSize; + Bitmap logo = BitmapFactory.decodeResource(context.getResources(), R.drawable.mapbox_logo_icon, bitmapOptions); + + float scaledHeight = bitmapOptions.outHeight * heightRatio / bitmapOptions.inSampleSize; + canvas.drawBitmap(logo, margin, original.getHeight() - scaledHeight - margin, null); } /**